What internship gives me a better shot at landing an IB offer my senior fall?

I'm currently a junior finance major at a semi-target right next to an industry hub. I'm looking at internships for this 2019 summer about to lock one down but wondering which one would provide me with the best chance at landing an IB offer in the fall of 2019 at a boutique bank, bulge is easily out of my reach. I know I am behind the wagon on my late interest in investment banking as I should've tried to snag an internship this fall (my junior year fall) as it's more common to get an internship than just a full time offer since I am graduating next year in the spring 2020. My previous two internships have been working within the finance division of a public company and the other one was with a small brokerage firm where I acted as a credit analyst.

I had a super day with a small PE firm but unfortunately it didn't work out so my current options for an internship this summer are:

1. A portfolio compliance intern at a large fixed-income investment management firm
2. A financial analyst intern at a medium sized company where I would be doing evaluation modeling, due diligence, and report writing
3. A top 25 consulting firm intern where I would be in the corporate performance improvement division
4. Shadow/intern at a start-up tiny private investment bank with only 2 employees

Sorry for the long post and if there are any dumb assumptions/questions as I am rather ignorant when it comes to the beast that is the IB industry. Any sort of advice or thoughts on which option for this summer will best propel me into having a shot at an IB offer in the upcoming fall are much appreciated. Thank you.